SA08 Cirrus Logic Inc, SA08 Datasheet

IC PWM AMP 450V 20A 12-PWRDIP

SA08

Manufacturer Part Number
SA08
Description
IC PWM AMP 450V 20A 12-PWRDIP
Manufacturer
Cirrus Logic Inc
Series
Apex Precision Power™r
Datasheet

Specifications of SA08

Mfg Application Notes
SAxx App Note 34
Applications
PWM Motor Driver
Number Of Outputs
1
Current - Output
20A
Voltage - Load
16 V ~ 450 V
Voltage - Supply
14 V ~ 16 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Through Hole
Package / Case
12-DIP Module
For Use With
598-1460 - EVALUATION KIT FOR SA08
Lead Free Status / RoHS Status
Contains lead / RoHS compliant by exemption
Other names
598-1363

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FEATURES
• IGBT OUTPUTS
• WIDE SUPPLY RANGE—16-450V
• 20A TO 100°C CASE
• 3 PROTECTION CIRCUITS
• SYNCHRONIZED OR EXTERNAL OSCILLATOR
• FLEXIBLE FREQUENCY CONTROL
APPLICATIONS
• MOTORS
• REACTIVE LOADS
• MAGNETIC BEARINGS
• LARGE PIEZO ELEMENTS
• OFF-LINE DRIVERS
• C-D WELD CONTROLLER
DESCRIPTION
supply 9KW to the load. An internal oscillator requires no
external components. The clock input stage divides the oscil-
lator frequency by two, which provides the switching frequency
of 22.5 kHz. The oscillator may also be used to synchronize
multiple amplifiers. Current sensing is provided for each half
of the bridge giving amplitude and direction data. A shutdown
input turns off all four drivers of the H-bridge output. A high
side current limit and the programmable low side current limit
protect the amplifier from shorts to supply or ground in addition
to load shorts. The H-bridge output IGBTs are protected from
thermal overloads by directly sensing the temperature of the
die. The 12-pin hermetic MO-127 power package occupies
only 3 square inches of board space.
BLOCK DIAGRAM AND TYPICAL APPLICATION
MOTOR TORQUE CONTROL
SA08U
The SA08 is a pulse width modulation amplifier that can
www.cirrus.com
CONTROL
SIGNAL
Pulse Width Modulation Amplifiers
5V
P r o d u c t T e c h n o l o g y F r o m
P r o d u c t I n n o v a t i o n F r o m
SA08
5V
CLK OUT
CLK IN
+PWM
FLAG
GND
Vcc
10
1
3
4
2
5
470pF
OSC
Copyright © Cirrus Logic, Inc. 2010
(All Rights Reserved)
45K
÷2
SHUTDOWN
CURRENT
CONTROL
DRIVERS
OUTPUT
LIMIT
PWM
EXTERNAL CONNECTIONS
ILIM/SHDN
Case tied to pin 5. Allow no current in case. Bypassing of supplies
is required. Package is Apex MO-127 (STD). See Outline
Dimensions/Packages in Apex data book.
*See text. As +PWM goes more positive, A OUT duty cycle
increases.
CLK OUT
CLK IN
+PWM
FLAG
GND
1
2
3
4
5
6
12
11
9
8
6
7
A OUT
I SENSE A
I SENSE B
ILIM/SHDN
B OUT
+V
S
VIEW
VIEW
TOP
TOP
.01µF
5K
APEX − SA08UREVG
12
11
10
9
8
7
RSENSE
12-PIN POWER DIP
PACKAGE STYLE CR
1K
RSENSE
*
1K
MOTOR
*
+VS
SA08
VCC
ISENSE A
A OUT
B OUT
I SENSE B
DEC 2010
SA08
1

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SA08 Summary of contents

Page 1

... LARGE PIEZO ELEMENTS • OFF-LINE DRIVERS • C-D WELD CONTROLLER DESCRIPTION The SA08 is a pulse width modulation amplifier that can supply 9KW to the load. An internal oscillator requires no external components. The clock input stage divides the oscil- lator frequency by two, which provides the switching frequency of 22.5 kHz. The oscillator may also be used to synchronize multiple amplifiers ...

Page 2

... MTTF. For guidance, refer to the heatsink data sheet. 4. Guaranteed but not tested 100% duty cycle is not required V The SA08 is constructed from static sensitive components. ESD handling procedures must be observed. CAUTION The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or subject to temperatures in excess of 850° ...

Page 3

... Vs, (V) CLOCK FREQUENCY OVER TEMP 102.0 101.5 101.0 100.5 100 99.5 99.0 98.5 98.0 –50 – CASE TEMPERATURE, (°C) 25° Vcc QUIESCENT CURRENT 100 SWITCHING FREQUENCY, F (kHz) Vs QUIESCENT VS FREQUENCY 100 500 SWITCHING FREQUENCY, F (kHz) SA08 75 100 125 ...

Page 4

... ON condition. This means, in turn, that if the input signal SHUTDOWN SIGNAL to the SA08 at startup is demanding a 100% duty cycle, the FILTER 0/10V output may not follow the command and may tri-state C 1N4148 FILTER condition ...

Page 5

... Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. SA08U power supply voltage. The output stage devices will be damaged S supply is applied. Always sequence the V S SA08 supply prior to the +V supply ...

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